Nonequilibrium modeling of laser sustained hydrogen plasmas

Ayhan E. Mertogul, Herman Krier

Research output: Contribution to conferencePaper

Abstract

A kinetic nonequilibrium model of laser sustained plasmas (LSPs) in hydrogen has been formulated and solved. This model is the first of its kind and includes a discretized beam taytrace with a variable index of refraction based upon plasma electron number density. Model results have compared favorably with experimental results and the model has been used to provide predictions of LSP performance well outside the realm of experiments. For the H2 flow rates and pressures considered no significant kinetic nonequilibrium was observed in LSP core regions for incident powers up to 700 kW. Beam refraction by the LSP has been observed to have a major effect on LSP performance. Multiple steady state solutions have been obtained which are dependent upon initial conditions, a feature not clearly understood.

Original languageEnglish (US)
DOIs
StatePublished - Jan 1 1993
EventAIAA 24th Plasma Dynamics, and Lasers Conference, 1993 - Orlando, United States
Duration: Jul 6 1993Jul 9 1993

Other

OtherAIAA 24th Plasma Dynamics, and Lasers Conference, 1993
CountryUnited States
CityOrlando
Period7/6/937/9/93

ASJC Scopus subject areas

  • Engineering(all)

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    Mertogul, A. E., & Krier, H. (1993). Nonequilibrium modeling of laser sustained hydrogen plasmas. Paper presented at AIAA 24th Plasma Dynamics, and Lasers Conference, 1993, Orlando, United States. https://doi.org/10.2514/6.1993-3224